Electro-magnetic car wheel and brake



(No Model.)

H. M. BEIDLER.

ELEGTRO MAGNETIC UAR WHEEL AND BRAKE.

No. 284.365. V Patented Sept. 4, 1883.,

Wizemmean N. PETERS. PhmLil-hnwhnr. Washington, D. c.

UNITED STATES PATENT OFFICE.

HENRY M. BEIDLER, on TEXABKANA, ARKANSAS.

ELECTED-MAGNETIC CAR WHEEL 'ANDBRAKE.

SPECIFICATION forming part of Letters Patent No. 284,365, dated September 4, 1883.

Application filed January 17, 1883. (No model.)

To all whom it may concern:

Be it known that I, HENRY M. BEIDLER, a citizen of the United States, residing at Tex arkana, in the county of Millerand State of Arkansas, have invented certain new and useful Improvements in Electro-Magnetic Car Wheels and Brakes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and usethe same.

This invention relates to certain improvements in the construction of car-wheels; and it has for its object tocreate sufficient traction at anyreqnired time'to cause the wheels to hold to the track to any desired extent,so as to prevent the wheel slipping in bad weather, or to operate as car-brakes, as more fully hereinafter specified. These objects I attain by the means illustrated in the accompanying drawings, in. which- Figure 1 represents an elevation ofa carwheel, showing my invention applied thereto; and Fig. 2, a sectional view thereof.

The letter A indicates an ordinary carwheel, which is provided with a series of any desired'number of radial slots. in its web, six

being shown in the present instance. In these slots are located the electro-magnets B, each consisting of a bar of soft iron wrapped with a suitable coil of wire, .as ihdicated by the letter O. The ends of the ceils are connected or form a continuous wire, as indicated in Fig. l, and from either of two adjoining magnets the wires are extended towardthe center of the wheel, as indicated by the letter a, and are permanently connected to the metallic annuli D E, which set loosely upon the shaft of wheel. Between the boss of the wheel and the first-mentioned. annulus "is interposed an insulating-annulus of hard rubber, F, and between the two metallic annuli is interposed a are mounted upon a sleeve of hard rubber, G, i

insulate the two disks. Other insulating masimilardisk of hard rubber, F. The annuli which sets on the shaft, so as to completely terial, it is evident, may be substituted for the hard rubber. The cores of the magnets preferably extend through to the periphery of the I wheel, as shown, and are clamped in position by means of wedges H. WVhen in position, there are arranged to bear upon the metallic annuli above mentioned flat springs attached to insulated supports secured to the journalbox of the wheel. These springs are conneoted with wires running along the journalbox,'and extending to the positive and negap tive poles of a voltaic battery, dynamo-electro machine, or other electric generator, in such manner as to pass a continuous current of 601 electricity through the coilsofthe electro-magnets, so as to magnetize their cores, the circuit-wire having a suitable interposed key, by means of which the circuit may be made or broken by the engineer or other person in order to magnetize and demagnetize the cores when required. I

The operation of my invention will be readily understood in connection with the above description, and is as follows: When any the control of the engineer or other person,

and when required, by employing a current of unusual strength, the wheels may be operated as brakes to stop the train.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

The combination, in a car-wheel havinga continuous rim and provided with radial slots, of the electro-magnets secured in said slots, having theircores extending through the rim, and the connections at the hub, whereby the current maybe applied or cut off, substantially as specified. I In testimony whereof I affix my signature in presence of two witnesses. HENRY M. BEIDLER. "Witnesses:

CnAs. DAVIs, WM. 'D. ALEXANDER. 

